Table 1.
Baseline Participant Characteristics Overall and by Physical Activity Group in the CARDIA Study
| Characteristic | Overall (n=1,826) | R2a (p-value) | Sufficient MVPAb (n=417) | Insufficient MVPAb (n=1,409) | p-valuec |
|---|---|---|---|---|---|
| Age, years | 45.4 (3.5) | 0.5% (0.002) | 45.5 (3.4) | 45.3 (3.6) | 0.242 |
| Race | 0.9% (<0.001) | <0.001 | |||
| White | 1,102 (60%) | 309 (74%) | 793 (56%) | ||
| Black | 724 (40%) | 108 (26%) | 616 (44%) | ||
| Gender | 0.6% (0.001) | 0.330 | |||
| Male | 781 (43%) | 187 (45%) | 594 (42%) | ||
| Female | 1,045 (57%) | 230 (55%) | 815 (57%) | ||
| Education | 4.2% (<0.001) | <0.001 | |||
| <12 years | 54 (3%) | 10 (2%) | 44 (3%) | ||
| High school | 794 (43%) | 133 (32%) | 661 (47%) | ||
| College | 515 (28%) | 120 (29%) | 395 (28%) | ||
| Masters, PhD, etc. | 463 (25%) | 154 (37%) | 309 (22%) | ||
| Alcohol, mL/d | 2.4 [0, 13.6] | 0.2% (0.029) | 7.2 [0, 19.1] | 2.4 [0, 13.6] | <0.001 |
| Smokingd | 1.6% (<0.001) | 0.108 | |||
| Never | 1,148 (63%) | 274 (66%) | 874 (62%) | ||
| Former | 383 (21%) | 88 (21%) | 295 (21%) | ||
| Current | 281 (15%) | 50 (12%) | 231 (16%) | ||
| Energy intake, kcals/dd | 2,146 [1,638, 2,782] | 0.2% (0.111) | 2,144 [1,663, | 2,147 [1,663, 2,776] | 0.936 |
Notes: Data presented as mean ± SD, median [25th percentile, 75th percentile] or n (%). Boldface indicates statistical significance (p<0.05).
a
From unadjusted linear regression models predicting total sedentary time.
b
Sufficient MVPA defined as ≥150 minutes/week of MVPA or ≥75 minutes/week of VPA.
c
p-value compares values in the sufficient and insufficiently active groups.
d
Missing data for smoking (0.8%) and dietary intake (10%).
MVPA, moderate-to-vigorous intensity physical activity